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Ada CentenoAC
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Ada Centeno

@adacenteno

Accounts Receivable Coordinator at Smartsheet, managing collections for 300+ B2B accounts after reducing DSO by 15% at Amazon AWS.

Costa Rica
Message

At Smartsheet, I manage collections for a strategic portfolio of 300+ B2B commercial accounts. I review aging trends and work with internal teams and clients to resolve payment discrepancies, misapplied cash, and duplicate billing.

At Amazon, I managed a portfolio of 100+ enterprise and large accounts and developed collection strategies based on payment behavior and financial risk. I also analyzed account data and prepared AR performance metrics and cash forecasts for Weekly Business Reviews.

As an Accounts Receivable SME at AWS Amazon, I led root cause analyses on high-risk disputes and process gaps, and served as an escalation point for complex accounts. I mentored and onboarded new hires and helped pilot AR tools and document standard operating procedures.

Earlier, I resolved invoice disputes at Cargill and managed collections and payment plans across 1,000+ LATAM accounts at Thomson Reuters. At Amazon AWS, I reduced overall DSO by 15% within a 12-month period, and a regional collection playbook I drafted was adopted across LATAM AR teams.

Experience

Work history, roles, and key accomplishments

Cargill logoCA

Billing Processor

Mar 2017 - Aug 2018 (1 year 5 months)

Maintained system exchange rates, audited unpriced orders, generated invoices, and supported corporate collections and audits.

AB

Collections Agent – Third-Party Recovery

Aegis BPO

Oct 2011 - Oct 2013 (2 years)

Conducted high-volume recovery operations via automated dialer, achieving settlement negotiations and account rehabilitation under regulatory guidelines.

Education

Degrees, certifications, and relevant coursework

UM

Universidad San Marcos

Technical Degree, Human Resources

2020 - 2021

Completed a Technical Degree in Human Resources from Universidad San Marcos from 2020 to 2021.

CU

CUNA (now UTN)

English as a Second Language (ESL), English as a Second Language

2008 - 2009

Studied English as a Second Language (ESL) at CUNA (now UTN) from 2008 to 2009.

Tech stack

Software and tools used professionally

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